Accessibility/Video Media Fragments

Implementing Video/Audio Media Fragment URIs in Web Browser

Relevant to: audio & video

Two uses:

1. URL in address bar

video/audio starts playing from fragment start time and stops at end time, as soon as it is determined that it's really a media resource
default @controls are displayed and need to introduce markers for the fragment, see e.g. http://www.youtube.com/watch?v=LfRRYp6mnu0
for any video playing, when paused, update URL bar to include the fragment offset for people to cut and paste
possibly add the new URL to browser history when pausing
on context menu add a means to copy the media URL with fragment (see e.g. http://googlesystem.blogspot.com/2010/12/its-easier-to-link-to-youtube-timestamp.html)

2. URL in @src attribute of video/audio element

video/audio starts playing from fragment start time and stops at end time
if @controls are given, need to introduce markers for the fragment, see e.g. http://www.youtube.com/watch?v=LfRRYp6mnu0
if @loop is given, the fragment will loop and not the full resource unless the user navigates the video manually and thus breaks the "fragment context"
on context menu add a means to copy the media URL with fragment (see e.g. http://googlesystem.blogspot.com/2010/12/its-easier-to-link-to-youtube-timestamp.html)

Relevant to: images & video

Approach: CSS-like, i.e. hide unwanted pixels

Relevant to: audio & video

Approach: hide unwanted data

use URL in address bar or in @src attribute of video/img element, see e.g. https://labs.ericsson.com/developer-community/blog/beyond-html5-conversational-voice-and-video-implemented-webkit-gtk
only display/decode enumerated tracks (audio, video etc)
on context menu add a means to copy the media URL with fragment

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